Frozen soil layer water feeding sampling tool

Abstract

The utility model provides a frozen soil layer water feeding sampling tool which comprises a holding assembly and a sampling assembly, the holding assembly comprises an outer sleeve and a sliding piece, and the sampling assembly comprises a sampling pipe and a piston piece; according to the utility model, the holding assembly which can be held by an operator is arranged, the sliding piece is movably arranged in the outer sleeve, the sampling assembly can be mounted in the holding assembly, the sampling tube is fixed in the outer sleeve, and the sliding piece is connected with the piston piece; during use, water on a frozen soil layer can enter the sampling pipe by pulling the sliding piece, the sampling assembly is taken out from the holding assembly after collection is completed, and a collected water sample can be recycled by pushing the piston rod. Therefore, the water sampler can be matched with a soil auger for use, so that the water sampling process is more convenient, and the water sampler is applicable to sampling work of a deeper soil profile; one sampling point can be replaced and corresponds to one collecting pipe, so that water samples at different points are prevented from being polluted; meanwhile, the device is low in price, convenient to carry and suitable for field long-time sampling.

Description

Technical Field

[0001] The utility model relates to the field of permafrost sampling, in particular to a tool for sampling the upper water layer of permafrost. Background Technique

[0002] The upper water layer of permafrost refers to the water body located above the permafrost layer for many years. It is replenished by atmospheric precipitation and surface water, and its state varies with seasons, including subcategories such as full freezing in the cold season, semi-freezing in the cold season, and non-freezing throughout the year.

[0003] Studying the upper water layer of permafrost plays an important role in understanding and coping with climate change, ecosystem dynamics, and water resource management. The study of the upper water layer of permafrost helps to reveal the impact of permafrost thawing on the surface hydrological cycle, and to evaluate the long-term impact of climate change on water resources, especially in polar and alpine regions. In addition, studying the impact of the upper water layer of permafrost on ecosystem health and biodiversity is crucial. It can guide the sustainable management of water resources and provide a scientific basis for infrastructure construction in permafrost areas. These studies are crucial for predicting future climate change trends and formulating coping strategies.

[0004] However, it is inconvenient to collect the upper water layer of permafrost. The traditional method for sampling the upper water layer of permafrost is as follows: Dig a soil profile with a certain depth in the permafrost area. When a certain depth is dug, water seeps out, and the sampler needs to hold a sample container to collect the seeping water. However, when the dug profile is relatively deep or the seeping water of the upper water layer of permafrost is less, it is inconvenient to collect. And this traditional collection usually requires a large amount of manpower and physical strength to complete the excavation task, which is very cumbersome and time-consuming in long-term or large-area operations.

[0005] Currently, the invention of the soil drill makes it convenient to collect soil samples. However, the soil drill can only collect soil specimens in the permafrost area, and for the seeping water in the soil, manual collection is still required. There is still no tool that can conveniently cooperate with the soil drill to collect the upper water layer of permafrost. Summary of the Invention

[0006] Purpose of the Invention: The utility model provides a tool for sampling the upper water layer of permafrost, which can directly extract the seeping water in the sampled soil of the permafrost layer and then recover it after sampling is completed.

[0007] Technical Solution: The utility model provides a tool for sampling the upper water layer of permafrost, including:

[0008] A holding assembly, the holding assembly includes an outer sleeve and a sliding member;

[0009] The sliding member is arranged inside the outer sleeve and reciprocates. A holding part is provided at the first end of the sliding member, and a first connecting part is provided at the second end; a clamping member is provided on the inner wall of the outer sleeve at a part away from the sliding member, and a perforation is opened at the end of the outer sleeve;

[0010] Sampling assembly, the sampling assembly includes a sampling tube and a piston member;

[0011] A second connecting portion is provided at the first end of the piston member, and a piston is formed at the second end; the first end of the sampling tube is embedded in a clamp member, and an injection head is provided at the second end;

[0012] The piston member is movably arranged in the sampling tube, the sampling tube is placed in an outer sleeve and the second connecting portion is connected to the first connecting portion, and the injection head extends out of the perforation;

[0013] The sliding member is connected to the piston member to move axially. Water in the upper layer of the frozen soil area is sucked into the sampling tube through the injection head, and the internal volume of the sampling tube is changed by the piston.

[0014] Further, the outer sleeve is configured as a semi-circular tube.

[0015] Further, a guiding section is formed on the inner wall of the outer sleeve, and the sliding member reciprocates under the guidance of the guiding section.

[0016] Furthermore, the inner diameter of the guiding section of the outer sleeve is smaller than the inner diameter of the part of the outer sleeve that accommodates the sampling tube.

[0017] Further, the first connecting portion is formed with a chamber for the second connecting portion to be embedded.

[0018] Furthermore, the first connecting portion is configured as an elastomer.

[0019] Further, bumps are added to the second connecting portion.

[0020] Further, the clamp member is configured as a double-layer annular sheet, and a convex platform is formed at the first end of the sampling tube, and the convex platform is embedded between the double-layer annular sheets.

[0021] Further, the holding assembly is made of stainless steel, and the sampling assembly is made of polyethylene.

[0022] Beneficial effects: By providing a holding assembly that can be held by an operator, the sliding member is movably arranged in the outer sleeve, and at the same time the sampling assembly can be installed in the holding assembly, the sampling tube is fixed in the outer sleeve, and the sliding member is connected to the piston member; when in use, pulling the sliding member can make the water in the frozen soil layer enter the sampling tube, and after the sampling is completed, the sampling assembly is taken out of the holding assembly, and pushing the piston rod can recover the sampled water sample. Therefore, the utility model can be used in cooperation with a soil drill to make the water sampling process more convenient, and is applicable to the sampling work of deeper soil profiles; one sampling point can be replaced with a corresponding sampling tube to avoid contaminating the water samples of different sampling points; at the same time, it is low in price, convenient to carry, and suitable for long-term sampling in the wild. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic diagram of the overall structure of the sampling tool for water above the frozen soil layer of the present utility model;

[0025] Figure 2 is a schematic diagram of the structure of the holding component;

[0026] Figure 3 is a schematic diagram of the structure of the sampling component.

[0027] Reference numerals:

[0028] 1. Holding part; 2. Sliding part; 3. Outer sleeve; 4. First connecting part; 5. Clamping part; 6. Perforation; 7. Second connecting part; 8. Boss; 9. Piston part; 10. Piston; 11. Injection head. Detailed implementation manners

[0029] The following will further describe the implementation manners of the present application in detail in combination with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0030] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0031] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0032] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0033] A sampling tool for water above the frozen soil layer, such as Figure 1 shown, includes a holding assembly and a sampling assembly.

[0034] As Figure 2 shown, the holding assembly includes an outer sleeve 3 and a sliding member 2; the sliding member 2 is arranged inside the outer sleeve 3 and reciprocates, a holding portion 1 is provided at the first end of the sliding member 2, and a first connecting portion 4 is provided at the second end; a clamping member 5 is provided on the inner wall of the outer sleeve 3 at a portion facing away from the sliding member 2, and a through hole 6 is opened at the bottom end of the outer sleeve 3.

[0035] As Figure 3 shown, the sampling assembly includes a sampling tube and a piston member 9; a second connecting portion 7 is provided at the first end of the piston member 9, and a piston 10 is configured at the second end; the first end of the sampling tube is embedded in the clamping member 5, and an injection head 11 communicating with the sampling tube is opened at the second end; the piston member 9 is movably arranged in the sampling tube, the sampling tube is placed in the outer sleeve 3 and the second connecting portion 7 is connected to the first connecting portion 4, and the injection head 11 extends out of the through hole 6.

[0036] It should be noted that in this solution, all the first ends involved correspond to the upper ends in the drawings, and all the second ends correspond to the lower ends in the drawings.

[0037] Based on the above structure, the sliding member 2 is connected and fixed to the second connecting portion 7 of the piston 10 rod through the first connecting portion 4, and the first end of the sampling tube is simultaneously fixed in the clamping member 5. Therefore, the position of the sampling tube in the outer sleeve 3 is fixed, and the injection head 11 is exposed at the bottom end of the outer tube through the through hole 6. The operator holds the holding portion 1 and pulls up the sliding member 2. The sliding member 2 drives the piston member 9 to move axially upward, changes the internal volume of the sampling tube through the piston 10, the internal volume below the piston 10 gradually becomes larger, and sucks the water above the frozen soil area into the sampling tube through the injection head 11.

[0038] To further improve the convenience of use, the sampling component can be replaced according to different environments and different sampling requirements. When digging in the permafrost area or drilling the soil to a certain depth with a soil drill and collecting the upper water in the frozen soil layer that seeps out, the holding component and the sampling component are used in combination. If the sampling tube is full or when replacing to a different sampling area and a new sampling tube needs to be replaced, the sampling component can be disassembled and a new one can be replaced.

[0039] To facilitate the replacement and installation of the sampling component, the outer sleeve is constructed as a semi-circular tube, which can be understood as half of a cylinder. Therefore, the sampling component can be taken out or snapped into place through the open end of the semi-circular tube, and the operation method is simple.

[0040] The holding part 1 can be constructed in various shapes that are convenient for operation, and there is no limitation here. Exemplarily, the holding part 1 can be disc-shaped, long rod-shaped, etc., which is beneficial for simply pushing the sliding part 2 up and down.

[0041] To make the sliding of the sliding part 2 in the outer sleeve 3 smoother, the inner wall of the outer sleeve 3 is constructed with a guiding section, and the sliding part 2 reciprocates under the guidance of the guiding section. As one of the implementation manners, as Figure 2 shown, the outer sleeve 3 is divided into a first section and a second section along the length direction. It can be seen from the figure that the inner diameter of the first section is smaller than that of the second section. Here, the first section is the guiding section that guides the sliding part 2. The contact surface between the guiding section and the sliding part 2 is fitted and smooth. Therefore, under the action of the guiding section, the sliding part 2 can slide up and down along the axis of the outer sleeve 3.

[0042] Specifically, the first connecting part 4 is constructed with a chamber for the second connecting part 7 to be embedded. When the second connecting part 7 enters the chamber, it is stuck inside the chamber, so that the sliding part 2 and the piston part 9 are relatively fixed to form an overall synchronous movement. The forms of the first connecting part 4 and the second connecting part 7 are not limited, as long as the above functions can be achieved. As one of the implementation manners, as Figure 1 shown, the first connecting part 4 is constructed as a first disc, the second connecting part 7 is constructed as a second disc. The diameter of the first disc is larger than that of the second disc, and a disc-shaped chamber is provided on the bottom surface of the first disc to be adapted to the second disc. The second disc enters the chamber and is stuck. In this state, the sliding part 2 and the piston part 9 are coaxially connected. In addition, the first connecting part 4 is constructed as an elastic body, and elastic plastics, rubber materials, etc. can be used, which is convenient for the second connecting part 7 to be quickly embedded. Adding convex points on the second connecting part 7 can enhance the friction between the two and prevent them from falling off during the sampling process.

[0043] In addition, the clamping part 5 is constructed as a double-layer annular piece on the inner wall of the second section of the outer sleeve. The first end of the sampling tube is constructed with a convex platform 8, and the gap between the double-layer annular pieces is just large enough for the convex platform 8 to be embedded. Therefore, the sampling tube can also be fixed in the outer sleeve and will not be displaced during the sampling process.

[0044] Generally, the holding assembly can be made of stainless steel, and the sampling assembly can be made of polyethylene.

[0045] After the holding assembly and the sampling assembly are assembled, an operator holds the outer sleeve with one hand and holds the holding part 1 with the other hand, so that the injection head 11 enters the water in the oozing frozen soil layer. Then, keeping the outer sleeve 3 held still by hand, slowly pull upward with the hand holding the holding part 1, drive the piston 10 by pulling the sliding part 2 and the piston part 9, and suck the water in the oozing frozen soil layer into the sampling tube. Then, disassemble the sampling assembly, and by pushing the piston part 9 downward, let the collected water sample flow out from the injection head 11 and pour it into the water sample bottle.

[0046] To ensure the accuracy of sample collection, the sampling assembly needs to be replaced with a new one after collecting a sample once, so as to avoid contamination of the already sampled sample.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than limiting the present application. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered within the scope of the claims of the present application.

Claims

1. A water sampling tool for frozen soil layer, characterized in that: include: A grip assembly, the grip assembly comprising an outer sleeve and a sliding member; The sliding member is arranged inside the outer sleeve and reciprocates. The first end of the sliding member is provided with a gripping portion, and the second end is provided with a first connecting portion. The inner wall of the outer sleeve is provided with a clamping member at a portion away from the sliding member, and a through hole is provided at the end of the outer sleeve. A sampling assembly, the sampling assembly comprising a sampling tube and a piston member; The first end of the piston member is provided with a second connecting portion, and the second end is configured with a piston; the first end of the sampling tube is embedded in the clamp member, and the second end is provided with an injection head; The piston is movably arranged in the sampling tube, the sampling tube is placed in the outer sleeve and the second connecting part is connected to the first connecting part, and the injection head extends out of the through hole; The sliding member is connected to the piston member for axial movement, and water from the frozen soil area is sucked into the sampling tube through the injection head, and the internal volume of the sampling tube is changed through the piston.

2. The water sampling tool for frozen soil layer according to claim 1, characterized in that: The outer sleeve is configured as a semicircular tube.

3. The water sampling tool for frozen soil layer according to claim 1, characterized in that: The inner wall of the outer sleeve is formed with a guide section, and the sliding member reciprocates under the guidance of the guide section.

4. The water sampling tool for frozen soil layer according to claim 3 is characterized in that: The inner diameter of the outer sleeve guide section is smaller than the inner diameter of the outer sleeve portion accommodating the sampling tube.

5. The water sampling tool for frozen soil layer according to claim 1, characterized in that: The first connecting part is configured with a cavity for embedding the second connecting part.

6. The water sampling tool for frozen soil layer according to claim 5, characterized in that: The first connecting portion is configured as an elastic body.

7. The water sampling tool for frozen soil layer according to claim 5 or 6, characterized in that: A convex point is added on the second connecting portion.

8. The water sampling tool for frozen soil layer according to claim 1, characterized in that: The clamp is constructed as a double-layer annular sheet, and the first end of the sampling tube is constructed with a boss, which is embedded between the double-layer annular sheets.

9. The water sampling tool for frozen soil layer according to claim 1, characterized in that: The holding component is made of stainless steel, and the sampling component is made of polyethylene.

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